[CentOS] C8 and backup solution

Fri Apr 3 17:17:10 UTC 2020
John Pierce <jhn.pierce at gmail.com>

On Fri, Apr 3, 2020 at 6:58 AM Chris Adams <linux at cmadams.net> wrote:

> It isn't just databases - there are other things that backing up
> individual files one at a time is not so good.  The best way to handle
> that is to freeze/snapshot the whole filesystem, and then back up the
> snapshot.  This can be scripted pretty easily if the filesystem is on
> LVM.

I tried this with a fairly busy and rather large database server (ok, it
was a database server running a simulation of a production workload) and
LVM (with either ext4 or xfs)  and found LVM snapshots to be completely
unworkable under busy 8K block random write workloads

now, ZFS does snapshots very nicely

-john r pierce
  recycling used bits in santa cruz